If someone who actually knows Korean can check my guesswork, looks like VSL S2 follows the same format as S1:
Sign-ups: May 1 - 7
Qualifiers: May 18 - 19
Individual League from June 2 - July 7
Team League from July 13 - 21
Same prize pool as S1, but notably it looks like the individual finals are now Bo7 instead of Bo5